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YUCHAI YC4F/YC4FA Series Marine Diesel Engines

    Developed with world-renowned marine engine expertise — turbocharged intercooled technology for high-speed vessels.

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    Strong Power Output 50–130 PS continuous rating with excellent acceleration.
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    Low Fuel & Oil Consumption ≤195 g/kW·h fuel, ≤0.2 g/kW·h oil consumption.
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    Proven Reliability 3-round validation across 20 prototype units.
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    Quiet & Low-Emission Low vibration, low noise, clean operation.
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    Compact & Lightweight Ideal alternative to imported marine engines.
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    Flexible Interface SAE4# / SAE10" flywheel, CCS & ZC certified.
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Product Description

The YUCHAI YC4F/YC4FA Series Marine Diesel Engines (115-130HP) are co-developed with global marine engine leaders, integrating advanced turbocharging, intercooling technology, and YUCHAI’s proven reliability expertise. These engines feature compact designs, low vibration/noise, and ultra-low fuel consumption (≤195g/kWh), with lubricant use reduced by 50% compared to domestic alternatives. Certified by CCS and ZC, they are ideal for high-speed boats, fishing vessels, and as import-substitute power units. Optional SAE4# flywheel shells and SAE10-inch flywheels enhance versatility.

YC4F/YC4FA Technical Data

Model YC4FA130L-C20 YC4FA70L-C20 YC4FA50Z-C20 YC4F115C-31
Type Vertical, In-line, Water-cooled, 4-Stroke
Intake way Turbocharging & Inter-cooled Turbocharging Turbocharging & Inter-cooled
No. of cylinders-Bore × Stroke (mm) 4-96 × 103 4-92 × 100
Displacement (L) 2.982 2.66
Compression ratio 16.3:1 17.5:1 16.3:1
Continuous power/speed (kW(Ps)/r/min) 95 (130) /3100 50 (70) /1500 38 (50) /1500 63 (115) /2800
One-hour power/speed (kW(Ps)/r/min) 104.5 (140) /3200 55 (75) /1500 41.8 (55) /1500 70 (130) /2890
Min. specific fuel consumption (g/kW·h) ≤195
Specific oil consumption (g/kW·h) ≤0.2
Engine oil capacity (L) 10
The Min. steady operation speed (r/min) ≤1395 / ≤1395
Crankshaft rotation direction (see from power output end) Anticlockwise
Starting way Electrical
Net weight (kg) 380 420
Overall dimensions (L×W×H) (mm) 830 × 642 × 798 895 × 646 × 731
Matched reduction gearbox or marine gen-set HC038A etc. 40kW 24/30kW HC038A etc.
Certificate ZC, CCS

YC4F Installation Drawing

YC4FA Installation Drawing

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